94. Solving a chemistry problem
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94. Solving a chemistry problem
25 Determine the molar extinction coefficient of potassium chromate if the relative optical density is 2.65 * 10-3 M potassium chromate solution, measured at λ=372.5 nm in a cuvette with l=2.3 mm in relation to a reference solution containing 1* 10-3 mol/l potassium permanganate, was equal to 1.38.
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